Cam attachment for roller-beds of spinning-frames.



'E. l. -VALES & J. T. BISHOP. CAM'ATTACHMENT FOR ROLLER 850s 0F SPINNING FRAMES.

"AFP LIYCATION FILED SEPT; 30. I916.

Patented Jan. 2, 1917.

i 1 4 0 4. Q J5 EDWARD J. VALES AND JAMES T1. BISHQP, F AUGUSTA, GEflRG-Ld.

GAE. ATTACHMENTFOR BOLLER-BEDS 0F SPINNING-FRAMES.

Specification of Letters Eatent.

Patented Jan. 2, rear.

Application filed September 30, 1916. serial No. 132,999.

To all whom it may concern:

Be it known that we, EDWARD J. VALES and James T. BISHOP, citizens of the United States, residing at Augusta, in the county of Richmond, State of Georgia, have invented certain new and useful Improvements in Cam Attachments for Roller-Beds of Spinning-Frames, of which the following is a specification.

This inventlon relates broadly to spinning and more specifically to a sim lified mechanism to replace saddle weights or the feed rolls in the roll stand. v

The principal object of the present invention is to provide a simple mechanism to produce sufiicient and even pressure upon the saddles of spinning frames in order to permit the spinning of threads of even size and hardness.

A further object of the present invention is to provide a simple mechanism adapted to replace the saddle weights of a spinning frame and to obviate vibrations incldent to the weighted construction.

A still further object of the presentinvention is the provision of mechanism con structed to apply pressure to the saddles of the spinning frame feed rolls, which mechanism is capable of removal from above the v p through parts possesslng but small mass and rolls to permit cleaning and adjustments;

A' still further object of the present invention is an improvement on the construction disclosed in the patent to Vales No. 1,130,220, granted March 2, 1915.

Other and further objects of the present invention will in part beobvious and will;

in part be pointed out hereinafter in the specification by reference to the accompanying drawings wherein like parts are'represented by like characters throughout the several figures thereof.

Figure 1 is an elevational view illustrating the relation of the present invention to the parts of the ordinary roll frame and showing the device in'position thereon. Fig. 2 is a perspective view'more clearly illustrating the construction of the present de vice.

Heretofore in the spinning art the most common construction of roll frames has included a saddle comprising a pair of rigid bars arranged in overlapped relation and resting upon bearing points on the upper side of feed rolls. 'These bars were connected through a system of levers and to a weight suspended on a lever of a predetermmed length. The weight is provided in order to maintain a pred etermined pressure upon the overlapping bars comprising the saddle, in order to maintain the upper rolls securely against the lower feeding rolls to produce a mechanism intended to insure a predetrmined and even feed of the roving to the spinning arm. Since the spinning arm is mounted upon the same general framework as the roll table, and since the spinning arm runs at a high velocity, a considerable amount of vibration is imparted to the whole spinning frame and the freely suspended weight transmits a considerable amount of these vibrations to the feed rolls so that under certain conditions the pressure on the feed rolls is uneven, thereby producing an uneven. feed which causes uneven weight in the spun thread; furthermore,

the weighted systemextended beneath the which parts are all under tension in such manner as to obviate multiplication of vibrations produced by the running of the machine. Furthermore, the present dev1ce is capable of complete adjustment from above the roll table so that adjustments may be easily andquickly made particularly with reference to providing for the cleaning of the roll table.

More specifically the present invention comprises a lover of the third class which bears upon the back rail of theroll stand and against the top of the front saddle. This lever is connected by means of a link with an L-shaped spring anchor-secured in the bed of the roller table. The upper end of the link is secured within a cam lever which operates to' appl or release pressure upon the lever of the t ird class previously mentioned. This construction it will benoted tends to. pull the feed rolls toward or against the rollgtable and since there are aplurality of these pressure devices to a single spinning frame the combined effect is. to produce tension on the entire system ber 8, and the rear eed rolls support the rear saddle member '9. All the mechanism described thus far is common in the art.

The device comprising'the present invention comprises an L-shaped lever 10 which is provided with a slotted toe portion 11 and an arched portion 12 which terminates in a vertical supporting portion 14. This vertical portion terminates in a stud 15 which is adapted to be seated in a small opening in the back rail 7. The arched portion 12 is slotted as at 16 to provide anopening for the flat link 17 which is connected by means of a suitable rivet with the point of an oval cam face 18 provided on the end of the cam lever 19. The arch shaped portion 12 is cut awayto providea recess, as at 20, against which said cam is adapted to operate. The fiat link is twisted as at 21 and is formed with an opening 22 which passes over the L-shaped spring anchor arm 24. This spring anchor arm is provided with notched recesses 25 for varying the efi'ective length of both the spring anchor arm and the flat link.

When the parts are in the position illustrated in Fig. 1 the opening 22 is in such relation to the notches inthe spring arm that the link may be removed from the spring arm and the L-shaped upper lever 10 may be completely removed from the roll frame so that,the saddles and upper feed rolls may be easily cleaned and adjusted. When the partsare in the position indicated in full lines in Fig. 2 all of the several parts are under tension since the vertical member 14 is supported upon the back rail which is substantially rigid, and the front .end or toe 10 issupported upon the front saddle, thereb placing the saddles under a predetermined pressure. The dotted lines in Fig. 2 vindicate diagrammaticall the position of the parts when not un er tension. By this construction it will be noted that the upper feed rolls are ve securely maintained over the lower f rolls so that vibrations of the various mechanisms have little or no effect upon the pressure being exerted on the roving 26 whereby afree even 1 feed is im arted thereto and an even thread is the resu t. I

Since it is possible to vary the specific embodiments of our invention without de-. parting from the scope of the invention, we

her seated upon said back rail and extending over the feed rolls and bearing against one of said saddles, a bed-plate carrying said roll. stand, an L shaped spring member mounted in said bed-plate and provided on its outer end, with adjusting notches, a flat link connected with said spring arm, and a rotatable cam secured to said flat link and bearing upon said arched-shaped member whereby tension may be applied or released to said arched-shaped member to apply or release pressure on the saddles.

2. In a device of the class described in combination, a roll stand, lower feed rolls mounted upon said roll stand, upper feed rolls mounted upon said roll stand and above the lower feed rolls, saddle members bearing upon the upper feed rolls, a roll stand bed, a back rail, an L-shaped anchor arm secured in said bed, an arched-shaped lever ,having one end mounted upon said back rail and the other end resting upon said saddles, a link connecting said anchor arm with said arched-shaped lever, and a cam lever for applying tension'to said link and pressure to the arched-shaped lever.

3. In a device of the class described in combination, a roll stand bed, a roll'stand -mounted upon said bed, feed rolls carried by said roll stand, a saddle above said feed rolls, an anchor secured to said bed, said anchor comprising a spring member secured beneath the feed rolls and extending toward the rear of the roll stand, an arched-shaped lever resting upon a portion of the frame of the roll stand and upon said saddle, means connecting 'said anchor and said archedshaped lever, and devices for applying tension to said means to apply pressure to the said saddle.

4. In a device of the character described in combination, a roll stand bed, a roll stand mounted upon said bed, feed rolls in said roller stand, saddles bearing on certain of said feed rolls, a removable lever having one end resting upon a portion of the frame of the roller stand and the other end resting upon said saddles, and means compris mg a cam and an- L-shaped spring anchor for applying pressure to said lever to apply pressure to the said saddles.

5. In a device of the character described in combination, a bed-plate constructed to carry a roll stand, a roll stand mounted upon said bed-plate, lower feed rolls mounted in said roll stand, removable upper feed rolls mounted over'said lower feed rolls, a saddle resting upon said upper feed rolls, a back rail provided with a recess, an archedshaped lever having one, end seated in said recess in the back rail and the other end resting upon the saddle, an L-shaped anchor member secured in the bed-plate and provided on its outer end with a plurality of adjustment notches, a cam lever above the said arched-shaped lever, and a link connectingthe said anchor member and the cam lever substantially as described.

p mounted link and adapted to be operated to place tension upon said to apply pressure to the i said saddles.

7 In a device of the character described 50- in combination, a roll stand table,ga roll stand mounted u on said ;tab1e, feed rolls carried bysaid n stand, saddles above said feed rolls, a rigid spring anchor secured to said roll stand table, a link connected to said anchor, and means comprising a long cam above said saddles for applying pressure upon said saddles and tension upon said link,- Whereby' the said saddles are suitably malntained under pressure developed through parts possessing relatively small mass.

8. In a device of the character described in combination, a roll stand, a plurality of feed rolls carried b shapedanchor mem er secured beneath said rolls, an arched-shaped lever member above said rolls and having one end comprising a device to apply ressure to said rolls when a pressure is app ied to the said lever, and cam means connecting said anchor and said lever in such manner as to apply or release pressure to said lever as desired,

9. In a device of the character described in combination, a roll stand, a plurality of feed rolls mounted in said roll stand, means for applying pressure to certain of said feed rolls, said means comprising aremovable bar above said feed rolls, a'rigld spring bar anchor and cam. devices connected'to said spring anchor, for applying pressure to said removable bar.

EDWARD J. 'VALES. JAMES T. BISHOP.

said roll stand, an L-' 

